SPIRAL DRILL-AND-BLAST CONCEPT MAY SPEED UP TUNNELING ADVANCE RATE

Principles and self-shielding nature of concept are explained, and prototype of spiral blast machine is described. Operational experience and test results of shield performance are evaluated.

  • Corporate Authors:

    American Institute of Mining, Mettalurgy & Petroleum Engineers

    345 East 47th Street
    New York, NY  USA  10017
  • Authors:
    • Peterson, C R
    • FISK, A T
    • BROOKS, R E
    • Olson, J J
  • Publication Date: 1977-6

Media Info

  • Features: References;
  • Pagination: p. 29-32
  • Serial:
    • Mining Engineering
    • Volume: 29
    • Issue Number: 6
    • Publisher: American Institute of Mining, Mettalurgy & Petroleum Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00165233
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Dec 27 1977 12:00AM